Upon smoking more weed than is necessary or advisable from a bong with ancient water, the act of pouring the thick, murky liquid on a piece of paper and saying the first thing that comes to mind. Much like saying what you see in a cloud pattern and very closely related to the Rorshach Test. A good indication of what lurks in one's subconscious.
Ryan and I smoked 47 bong hits and then dumped the bong water onto some paper. I performed a Bongshach test on Ryan and he said that he saw the face of God or maybe a large cookie in the representation.